Teeter board



J. R. DAVIS.

` TEETER BOARD. APPucATloN FILED AuG.22, 192|.

1,437,5888. Pam-ea Dee. 5,1922.

Patented @en 5, i922,

JOHN R. DAVIS, OFSEATTLE, WASHINGTON.

TEETER BOARD.

To all {wim-m #may concern:

Be it lrnown that l, JOHN l'. Davis, a subject of the King of England, residin` at 4Seattle-in the county of King and ctate 5 ot FVashington, have invented certain new and useful Improvements in rlleeter Boards, of which the following is a specification, rekterence being had to the accompanying drawings. Y j f It is the purpose of the present invention to provide a device of this hind, which may be used indoor or outdoor, and is particularly adapted tor use amusement places, or on playgrounds.

l Another purpose consists in the provision of a device ot this general character, wherein the teeterboard is mounted 'upon a base to support the hoard for rocking movement, there being yieldable means for connection between the base and the hoard, so-that the board may be oscillated in a vertical plane,

there being handles or grips adjacent the cpposite ends of the board to hold those who may he operating rthe board in position and assist materially in preventing thein from falling oil. i

Still another purpose is to provide a device ot this kind, which may be constructed so that it is portable from one place to another, the base thereof being employed to protect the licor covering or floor from wear, when the teeter board is operated indoors.

A further purpose consists in the provision of a support, on which the board oscillates, there being springs or other yieldable means mounted on the support and having arms projecting trom the coils or" the springs to engage between the board and ythe base of the support, so thatthe springs willcounteract keach other when the board is loscillated.'

While the design andk construction atpresent illustrated and set torth are deemed preferable,y it is obvious that asa result of a reduction of the invention to a more practical form for commercialpurposes, the invention may be susceptible ot changes, and the right to` these changes is claimed, provided they are comprehended within the scope of what is claimed. y The invention comprisesfurther features and combination ot' parts, as will be hereinafter set forth, shown in the drawings and claimed. f

yinthe drawings:

Figure l is a view in elevation showing the teeter board constructedL in accordance with the invention;

@Figure 2 is a vertical sectional view on line 2 2 of Figure l; n v l Figure 8 is av viewin elevation ot" a modified forni ot teeter board, showing one, of the supports l5 removed, and wherein the yieldable connections hetweenthe hoard and the base of the support are slightly modi fied; v

Figure 4c is a sectional view on line 444 of Figure 3; i

Figure 5 is ayview in side elevation ot an# other form of teeter board, wherein is a ysingle yieldable device', such as a leaf spring connecting between the base and the support of the teeter board, to counterbalance `theoperator; and` rliigure 6 is a sectional view on line 6-6 ot Figuref. v n y Referring to the drawings, particularly Figures i and 21 designates a base which is provided with side iange 2 arranged in pairs, and between which the rockers are operable. lt is obvious `that the teeter board may be constructed to be used outdoors, and in this case the hase may be constructed accordingly, However itis obvious thatthe toeter board may be used indoors, either 'in gymnasiuins kor in enclosures atainusernent places, oriinay be portable'frorn one place to another, and-may befused in the rooms, particularly, the play rooms of r` private yh0rnes,.and in lthis latter case the base materially assists in preventingk wear on the `,floor or lloor coverinw. n fp rllhe lower curved portions or arches (whichengage Vbetween the side flanges 2) 'of the` rockers are connected by a i transverse bar 8. The ends of this transverse bar 3 are riveted to the curved or arcuate portions of kthe rockers as fat 5.- The arms ofv the roch-` ers diverge upwardly, andfsecured to' their upper ends as lat 6 is aboard 7, the opposite ends of which are yconstructed with seats 8 torthe operators, one to counterbalance the other. The opposite edges of the yboardv adjacent the seats are' provided with cut away portions 9 ot arcuate form similar to the cut away portions 23, so as to accommodate thelegs ofthe operators when occupying the seats with their legs straddhng the board. Rising upwardly Afrom the board 7 adjacent the cut away portions 9 are arched handles 10, which may be grasped, assisting materially in holding the operators on the seats.

Connected to the under surface ot the hoard, as at li are coil springs l2, which converge downwardly toward and are cennected detachahly at l to the base. rl`hese springs are alternately stretched and coiitracted as the board oscilla-tes, and assist materially in imparting movement to the board,y as well as counteracting each other7 to assist in impartii'ig` oscil .atory movements to the boards.

In Figures and 4 the teeter board is itied, and in this instance the base ll hat standing supports l5, on the arcuate surfaces 16 oic the heads 1T oic which the hoard 1S oscillates.

The supports are. provided with the laterally extending heads 20. ln the torni oft teeter board shown in l7igures S and Llltl-.e board 2l rocks upon the arcuate surfaces oi the lateral heads 20, and is 'provided with a single seat 32 tor a single operati lntliis case the opposite edges of the board adjacent the seat Q2 is provided with a 1cuate` cut away portions Q3 for the reception ot the legs of the operator. rlliough the hoard is provided with a single Seat. it is obvious that the board may have two seats, one at each end. Connecting the opposite edges ot the board and rising upwardly therefrom is a U-shaped or arched handle to be grasped by the operator to support the operator in position. Should the board 21 be provided with two seats. two handles would be employed. s

Extending axially through the heads 2O and having; means on its opposite ends prevent axial movement is sl'ialt or rod and mounted thereon are coil springs 2G, The ends of these coil springs termini` in elongated arms 27 and 2S. The arms 2i are slidably connected to the under surface of the board 21, while the arms 28 are connected to the base 14.

It will be noted that the spring arms. 2T and 28 on. one side of the supports will counteract corresponding arms on the other side of the supports, therefore acting to counterbalance the operator, when oscillating'thelooard 2l. In case the board 2l has a single seat,v it is obviousthat one of the coil springs and its arms 27 and 28 nearest the seat` 22 are constructed of relatively heavy spring metal, so that when ther board is free ot an operator, the board will be i nin the supports and connectingv them a pair ot bolts El and 34E, the former ot which slightly larger in diameterv to provide a lirin hearing for the board 225?,

29 has a si @le seat 327 and andlcrelatively het y spring `u.; Se to the base 30, and rests upon the l bolt 34;, and has its other free end slidalili' engaging the lower suri'iace of the board 2) adjacent the seat. f This spring mally in anY inclined position7 seat 32 is unoccupied. However when seat 32 is occupied the action of the spruit-f lgwill be overcome by the weifhtof tlcop .rator and then will act to not only come terbalance the boarrh but also the operator wien oscillating the board.

The invention haring been set forth, what is claimed as being` use'liul is:

ln a teetei' board, a relatively short lmse having upstanding parallel si yle 'Hannes e-ztending longitudinally ot the base and beine' ot uniform height throu 'hout tl ley tu.

an oscillatory board` rockers comprisingv upwardly diverginfr arms secured t the wider :tace or" the board, whereby the roc as" sume positions substantially mid fi y bctween the ends of the board? the lowiir pt g tions of theroclrei's terminating` inr arcin :c portions which i'ocli upon the have in sur-.i wis, as to engage the 'inside 'dices of the flanges. which act to prevent lateral mo nient or the arcuate portions as they roch' bwk and tortlioii the base and to retain the arcuate portions in ,enaifigcnient with the basen a transverse brace rod rigidly connect ino' the arcuate portions ot said rockers to reinforce and hold the rockers in register`r said rod being disposed centrally of the n arched portions7 so as to assume a position and in turn connected to the opposite ends of the board. and seats on the opposite ends of said board.

ln testimony whereof l hereunto affix my signature. n

JoiiN n. Davis. 

